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SteelDefense 120 EXT

Image by Alexander Bagno

Solve-based fire protective Basecoat for structural steelwork. Outdoors

Fire resistance rating: 30 minutes; 1 hour; 1 1⁄2 hours; 2 hours
(Tests acc. International Standards)
 

Product Description

SteelDefense 120 EXT is a white single pack thin film coating that foams up under the effect of fire/heat  (intumescent) to form an insulating layer.
SteelDefense 120 EXT fire protection system for structural steel is suitable for internal and external use

Organized Desk

Application Checklist

 

The following instructions are for on-site application only

 

Ensure that: 

  • SteelDefense 120 EXT is stored correctly.

  • Surface is dry and free from contamination

  • Correct spray equipment is used

  • Primer is compatible with SteelDefense 120 EXT and is applied correctly

  • Overcoating time for the Primer has not been exceeded

  • All damage to the Primer has been repaired and re-primed

  • Site and weather conditions are within the specification

  • Application instruction have been read before starting of work

  • Different base coats are not applied on the same section of steel

  • Equipment is clean and free from contaiminants or dried material

  • Wet film gauges are available for use

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SteelDefense 120 EXT is supplied ready for use and must not be thinned but should be thoroughly mechanically stirred prior to use

Method of Application

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  • airless spraying: equipments with a ratio of 45:1

  • yield 4 5 Litre/min

  • recommended is an intermediate drying period of 2 hours for applying the amount of 2.000 g/m2  

  • brushing/rolling: several coats are necessary with intermediate drying time of approx. 2hrs

Modern Watch

Drying times

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drying of SteelDefense 120 EXT is dependent upon a number of factors including

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  • temperature

  • air movement

  • thickness of coating

  • humidity

  • method of application


High humidity or low steel temperatures will increase drying time and low ambient temperatures thicker coats will also take longer to dry than thin coats once the total loading of 120-EXT has been applied the coating must be completely dry, before application of the Topseal

This typically can be between 5 days for lower loading and up to 15 days for maximum loadings brush or roller application may take up to 20 % longer to dry compared to spraying

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